Means for preventing displacement in rollers for roller bearings



' T646947 1927 P. A. E. ARMSTRQNG 9 y MEANS FOR PREVENTING DISPLACEMENT IN ROLLERS FOR ROLLER BEARINGS Filed Oct. 8, i923 ATTORNEY Patented Qct. 2 5, 1927.

UNITED stares PATENT orr' cs.

PERCY A. E. ARMSTRONG, OF NEW YORK, N. Y.

MEANS FOR PREVENTING DISPLACEMENT IN ROLLERS FOB. ROLLER BEARINGS.

Application filed October 8, 1923. Serial No. 667,124.

My invention relates to means for preventwhat wider area. This relation may be reing displacement in rollers for roller bearferred to, for convenience of statement, as ings. I The invention relates more particupoint contact when not under load, and line larly to roller bearings having rollers with contact under load. The line contact under 5 concavely curved surfaces. load is, however, not of sufiicient length to co With concavely curved rollers, which have produce appreciable departure from rolling diil'erent diameters in difierent parts of Contact over the entire bearing area, nor to th i l th, l th i displacement thereresult in appreciable sliding action between of relative to a curved bearing surface may the Surfaces in bearing contact. 1 As will "b result in the introduction, between parts or apparent, the greatest pressures are ini-. 65 the bearing rings or members, of a roller posed at and near the center of the line con- Section having a di t greater th th tact area when under load and the contact il bl Space I thi Way bi di pressures decrease on either side thereof as i i or even b k f th h i may the edges or limits of the line contact area result. This tendency becomes more marked r pproached.

as the difierence between the curvature of means for preventing longitudinal Tapers d races i increased, displacement of the rollers in the form shown By the present invention means are pro- 111 g 1 a d 2 is provided on the outer vided to prevent longitudinal displacement beefing inger member. In Fig. 1 such 0 of the rollers so arranged and disposed that Outer hearlhg member 10 is p d With in- 7 the contact between the roller and the means w y "e i g flanges 17, which are roior preventing endwise displacement there- Vided :Wlth ah Outward-i ham P 9 of is limited entirely or substantially to rollp d 9 heal h g theend f h roller ing contact, and sliding and resulting iricl ,.W 1ch 1s provided with extensions 19 havtion and wear are substantially eliminated. g a h hare taper 1 The line of Fig. 1 is a cross-section of a single row chhtact 2 15 Preferably Substantially PPO- roller bearing with concave rollers and emsltes h other Words at suhstahlliahy the b d i one f f th i ti th di same radial distance from the bearing center placement preventing means being located as the h g 16 0f the T0116? 14 n so on th outerbgflfing ring p 2 is a i the outer bearing member 10, making any like Fig. 1, except that the rollers have contact b t e oller and the flange a spherical ends. Fig. 8 is a cross-section of s t y i g c mtact.

a combined thrust and radial hearing with The Slightly modlhed form Ofhig- 2. has

concave rollers and with the displacement the @hds 0f h rollers 14" rounded ed as preventing means on the interior ring, and Shown at 22 the flfirhges 2 hhi'healihg Fig. 4: is an'enlar ged detail view of the form member 10a hhvlhg Contact Surface-S 24 0f hgwn in Fig v rounded form to cooperate therewith. The The bearings shown for illustration in h h hi e Parts is shown in enlarged.

Figs. 1 and 2 are simple radial hearings with Chitin-11h g- 4 concave rollers. The bearing illustrated-in With 1115 of Figs. 1 and 2 the matethese views has an outer bearing ring 10, Hal of I outer ring is cut away adjacent with curved bearin surface 11, and an inner to hhe of hohmch as i formihg bearing ring 12, wit a spherical bearing sur the grhoves, Tl1iS l s he parts face. The rollers 14 have the concaved surto h lhhchlhed Tea/d1}? hhll yi 811d face 16 with a curvature somewhat greater the hecessary fit for P p Toning whmct than the curvature of the hearing members to he f With accuracy. and adapted to make contact with the bearg have e mbination rai surfaces f th h f members i h dial and taper bearing with tapered concave narrow zone or region. Men the bearing rollers 5, Outer ing ring 25', and inner 50 is under substantial load such bearing region Preferably spherich1 Surface hearihg ring 305 i increased i idth as compared =5 th C931. 25". In the instance rolling contact between i dition when not under load, this being due to the mile? and displacement preventing the elasticity of the metal and such slight l g ment 26 and the coacting porgive as takes place under load, 15gtlOIl the rollers is secured locating t5 sults in distributing the load over a somethe g m of Cont ct 21" substantially on a W? cone, Whose apex-28 is on the bearing axis 28 and also on the roller axis 28", and Whose surface includes the load contact line 29. In

this Way the abutment 26 and rollers 25 meeting on the contact line 21" turn together and make only-rolling contact, as in the case oi the radial bearing of Figs. '1 and 2. 'A. relief groove 30 is provided so as to facilitate 'machine work and confine the area of contact to the region in which rolling contact alone is secured. While I have shown the applicas tion of my invention to but a small number of forms of bearing, it will be understood that the invention is applicable to bearings of a Wide variety of forms. Various forms of cages may be used. Showing of cages is omitted herein to avoid complication of the drawings;

The present caseisa continuation in part of my pri'or co ending application serial No. 413,338,filed ept. 28, 1920, entitled Means for preventingdisplacement of rollers in rcaaear distance from the bearing axis as the bearing v region of the roller to prevent longitudinal displacement of the rollers, and making 'sub stantially only rolling engagement therewith.

2. In a combined thrust andraklial roller bearing, a spherical inner bearing ring, an

outer bearing ring, tapered concavely curved rollers therebetween, and means on one of the bearing rings for preventing undue end- Wise movement of the rollers and making substantially only rolling contact therewith.

PERCYA. n; annsrnone I 

